US12416647B2 - Sensor, and system comprising the sensor and comprising a fastening apparatus - Google Patents

Sensor, and system comprising the sensor and comprising a fastening apparatus

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Publication number
US12416647B2
US12416647B2 US17/760,594 US202017760594A US12416647B2 US 12416647 B2 US12416647 B2 US 12416647B2 US 202017760594 A US202017760594 A US 202017760594A US 12416647 B2 US12416647 B2 US 12416647B2
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Prior art keywords
sensor
shape feature
clamping sleeve
opening
sensor body
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US17/760,594
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US20220404385A1 (en
Inventor
Michael Hauff
Tobias Rohse
Karl-Heinz Schmid
Gerhard Wieder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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Publication of US20220404385A1 publication Critical patent/US20220404385A1/en
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHMID, KARL-HEINZ, WIEDER, GERHARD, Rohse, Tobias
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAUFF, MICHAEL
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

Definitions

  • the invention relates to a sensor and a system comprising the sensor and a fastening apparatus, in particular, it relates to a sensor for detecting a physical variable in dependence on an alignment of the sensor and a system comprising the sensor and a fastening apparatus.
  • passive sensors have primarily been used, in particular in the field of speed detection in vehicles, to enable a function of assistance systems, for example ABS, ASR, or ESP.
  • assistance systems for example ABS, ASR, or ESP.
  • sensors which are activated by application of a supply voltage and generate an output signal. Therefore, for example, a data log is already generated in the sensor, which, after being transferred via a bus system, can be evaluated in a control unit.
  • diagnostic functions there is the option of implementing diagnostic functions.
  • sensors having at least two measuring elements are used to detect a movement direction of the wheel. It is therefore necessary upon the use of the sensors to install the wheel speed sensors in a predetermined orientation in the vehicle, so that the measuring elements of the sensors are aligned in relation to a movement of pole wheels. This alignment also cannot change during operation.
  • the invention is based on an object of solving the above problems and providing a sensor and a system comprising a sensor and a fastening apparatus, using which the sensor can be aligned easily and permanently.
  • the object may be achieved by a sensor as described herein and a system as described herein.
  • Advantageous refinements are contained in the further descriptions herein.
  • a sensor body of a sensor for detecting a physical variable in dependence on an alignment of the sensor around an axis has a predetermined first shape feature on an outer surface, which is configured to enable a predetermined alignment of the sensor around the axis.
  • the physical variable is a magnetic pulse induced by a movement of an object in the vicinity of the sensor, and the sensor is configured as an active speed sensor which magnetically detects a direction of the movement of the object.
  • An application of such active sensors in the field of speed detection of wheels of vehicles enables a signal transfer to be simplified and, for example, diagnostic functions to be implemented. Furthermore, a slow movement from a standstill can be detected at all or more accurately by providing the active speed sensor.
  • the direction of the movement may be detected by providing multiple measuring elements for the magnetic pulse in the sensor. Therefore, both a movement and also a direction of the movement, for example, of a pole wheel as the object can be detected by the sensor.
  • the first shape feature has a depression on the outer surface of the sensor body.
  • a depression in the sensor body is easy to produce and easily offers the option of enabling the alignment of the sensor upon a provision of a counterpart complementary to the depression, namely an elevation on the fastening apparatus.
  • the first shape feature has an elevation on the outer surface of the sensor body.
  • An elevation of the sensor body is also easy to produce and easily offers the option of enabling the alignment of the sensor upon a provision of a counterpart complementary to the elevation and possibly to the depression.
  • the sensor body has an essentially circular cylindrical shape
  • the alignment of the sensor is a predetermined orientation around the longitudinal axis of the essentially circular cylindrical shape
  • the elevation is arranged at a predetermined point on the circumference of the sensor housing.
  • the sensor can first simply be plugged into an opening of a fastening device, without paying attention to the orientation of the sensor. The sensor can then be pivoted with a slight rotational force to achieve the predetermined orientation and enable a form fit with the elevation.
  • the elevation forms a rib extending in parallel to the longitudinal axis.
  • a provision of the rib in parallel to the longitudinal axis is easily implementable in manufacturing and the orientation of the sensor can be permanently maintained securely.
  • a system comprising the sensor and a fastening apparatus for the sensor
  • the fastening apparatus has a receptacle body having a receptacle apparatus, which is configured to accommodate the sensor body, and a second shape feature complementary to the first shape feature on the receptacle body.
  • the receptacle apparatus has an elongated opening having an essentially circular cross section, and the second shape feature has a groove along a longitudinal direction of the opening.
  • a fastening structure or apparatus having a third shape feature complementary to the first shape feature and the second shape feature is additionally provided.
  • the senor can be securely fastened while maintaining the orientation.
  • the fastening structure or apparatus has a clamping sleeve which is configured to be accommodated in the opening and to be clamped therein radially between the opening and the sensor body, wherein the clamping sleeve is provided on its circumference with the third shape feature.
  • the senor By providing this clamping sleeve, the sensor can be fastened securely in the predetermined orientation at the same time upon insertion into the opening, so that the installation process is simplified, and it is nonetheless possible to still displace the sensor axially as needed.
  • the third shape feature is configured as an axial slot on the circumference of the clamping sleeve, wherein the slot longitudinal sides form two spaced-apart end sections on the circumference of the clamping sleeve.
  • Such a clamping sleeve is insensitive in relation to tolerances of the opening and the sensor and can be produced easily.
  • the two end sections are bent radially outward, the groove and the clamping sleeve are configured so that the two end sections protrude into the groove and the elevation of the sensor is arranged between the two end sections protruding radially outward into the groove.
  • This arrangement facilitates the installation, since the clamping sleeve can already be installed beforehand having the correct orientation of the third shape feature.
  • the third shape feature additionally has an elevation protruding radially outward into the groove of the opening.
  • FIG. 1 shows a lateral sectional view of an installation situation of a system according to the invention comprising a sensor, a fastening apparatus, and a fastening structure or apparatus.
  • FIG. 2 shows a side view of the sensor having a first shape feature.
  • FIG. 3 shows a front view of the fastening apparatus having a second shape feature.
  • FIG. 4 shows a front view of the fastening apparatus of FIG. 3 with the installed sensor.
  • FIG. 5 shows a detail of the illustration of FIG. 4 with the installed sensor and additionally a fastening structure or apparatus in a first embodiment.
  • FIG. 6 shows a detail of the illustration of FIG. 4 with the installed sensor and additionally a fastening structure or apparatus in a second embodiment.
  • FIG. 7 shows a front view of the fastening apparatus having an alternative second and third shape feature.
  • FIG. 1 shows a lateral sectional view of an installation situation of a system 1 according to the invention, which comprises a sensor 2 , a fastening apparatus 3 , and a fastening structure or apparatus 4 .
  • the fastening structure or apparatus 4 is not provided, rather the fastening apparatus is configured so that no separate fastening mechanism is required.
  • FIG. 1 shows a pole wheel 5 , which initiates magnetic pulses upon a rotation, which are detected by the sensor 2 .
  • FIG. 2 shows a side view of the sensor 2 having a first shape feature 7 .
  • the sensor has an axis A, wherein the sensor 2 is a sensor for detecting a physical variable in dependence on an alignment of the sensor 2 around the axis A.
  • the sensor 2 detects a change of a physical variable as a result of a movement of a material with respect to the sensor 2 , wherein the movement is only detectable in a predetermined alignment of the sensor 2 around the axis A.
  • the material is in this embodiment the pole wheel 5 having its teeth and the sensor 2 detects the magnetic pulses of the pole wheel 5 only when its alignment around the axis A is selected so that a detection direction corresponds to a tangential direction of the pole wheel 5 .
  • the sensor 2 is configured as an active speed sensor, thus as a sensor which is activated by applying a supply voltage and generates an output signal.
  • the sensor 2 has a sensor body 6 .
  • a rib thus an elevation, is provided as the first shape feature 7 on an outer surface of the sensor body 6 .
  • the elevation is provided at a predetermined point on the circumference of the sensor housing 6 and the first shape feature 7 thus enables a predetermined alignment of the sensor 2 around its axis A.
  • the first shape feature 7 is a depression, thus, for example, a bead along the axis A or a tangential flattening.
  • the sensor body 6 has an essentially circular cylindrical shape. Having the essentially circular cylindrical shape means that, in contrast to the completely circular cylindrical shape, the first shape feature is provided and/or other functional surfaces, for example, flats, are provided.
  • the axis A is in this embodiment a longitudinal axis of the essentially circular cylindrical shape of the sensor body 6 .
  • the rib is arranged in parallel to the longitudinal axis.
  • the elevation has a distance D in the axial direction from an adjoining end of the sensor body 6 .
  • the distance D is 8 mm in this embodiment, but can alternatively be greater or less.
  • FIG. 3 shows a front view of the fastening apparatus 3 having a second shape feature 8 .
  • the fastening apparatus 3 has a receptacle body 9 having a receptacle apparatus 10 , which is configured to accommodate the sensor body 6 .
  • the receptacle apparatus 10 is embodied in this embodiment as a hole, namely as an elongated opening having an essentially circular cross section, in the receptacle body 9 , but can alternatively, for example, also be a thread for screwing on a correspondingly configured sensor 2 .
  • the fastening apparatus 3 furthermore has a groove on the receptacle body 9 as the second shape feature 8 along a longitudinal direction in the hole.
  • the second shape feature 8 is complementary to the first shape feature 7 , which means that the properties of the first shape feature 7 and the second shape feature 8 complement one another and the first shape feature 7 and the second shape feature 8 fit with one another.
  • FIG. 4 shows a front view of the fastening apparatus 3 having the installed sensor 2 and the complementary shape features 7 , 8 .
  • the fastening structure or apparatus 4 has a clamping sleeve.
  • the clamping sleeve is configured to be accommodated in the opening, thus in the receptacle apparatus 10 , and to be clamped therein radially between the opening and the sensor body 6 .
  • the clamping sleeve is provided on its circumference with the third shape feature 11 .
  • the third shape feature 11 has an axial gap between two end sections 12 , 13 on the circumference of the clamping sleeve. This means that a continuous slot in the axial direction is provided on its circumference in the clamping sleeve.
  • the rib of the sensor body 6 protrudes through the slot, namely the third shape feature 11 , into the groove, namely the second shape feature 8 , to implement the alignment of the sensor 2 and the clamping sleeve around the axis A.
  • the clamping sleeve is furthermore provided with spring elements 14 to apply a secure clamping force.
  • the spring elements 14 are essentially elongated rectangular tongues, which are formed integrally on the clamping sleeve in the longitudinal direction at one end or fastened thereon. Alternatively, another shape, for example a square shape is also possible. They are typically formed by stamping free the contour of the tongues on three sides and then bent outward, so that they are pre-tensioned and protrude outward.
  • the spring elements 14 thus apply a radial clamping force upon an insertion into the opening of the receptacle body 9 due to a resilient property of the material of the clamping sleeve.
  • FIG. 6 shows a detail of the illustration of FIG. 4 having the installed sensor 2 and in addition the fastening structure or apparatus 4 in a second embodiment.
  • the fastening structure or apparatus 4 in FIG. 6 differs from the fastening structure or apparatus 4 in FIG. 5 in that the end sections 12 , 13 do not end at the circumference in order to form the axial free space, but rather the end sections are bent radially outward and protrude into the groove and the axial free space is formed in between.
  • the elevation of the sensor body 6 is thus arranged between the two end sections 12 , 13 protruding radially outward into the groove.
  • the fastening structure or apparatus 4 has both end sections 12 , 13 protruding radially outward into the groove and also end sections bent radially inward axially at another position.
  • the end sections bent inward protrude into a groove which in one embodiment of the sensor 2 is provided in a longitudinal direction in the sensor housing 6 .
  • FIG. 7 shows a front view of the fastening apparatus 3 having an alternative second shape feature 8 , 8 ′ and an alternative third shape feature 11 , 11 ′.
  • the alternative third shape feature 11 , 11 ′ of the fastening structure or apparatus 4 has, in addition to the continuous slot ( FIG. 5 ), an elevation as the third shape feature 11 ′.
  • the elevation protrudes from the clamping sleeve, namely the fastening structure or apparatus 4 , radially outward into a further groove, namely into the third shape feature 8 ′, to implement the alignment of the clamping sleeve around the axis A in relation to the receptacle apparatus 9 .
  • the sensor 2 is aligned by the rib in the slot of the clamping sleeve, namely in the third shape feature 11 , around the axis A in relation to the clamping sleeve.
  • the groove is not provided in the hole for the rib of the sensor body 6 , but rather the rib of the sensor body 6 merely protrudes into the slot of the clamping sleeve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Clamps And Clips (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
US17/760,594 2019-09-20 2020-09-03 Sensor, and system comprising the sensor and comprising a fastening apparatus Active 2042-06-16 US12416647B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019125405.1 2019-09-20
DE102019125405.1A DE102019125405A1 (de) 2019-09-20 2019-09-20 Sensor und System aus dem Sensor und einer Befestigungseinrichtung
PCT/EP2020/074537 WO2021052762A1 (fr) 2019-09-20 2020-09-03 Capteur, et système comprenant le capteur et comprenant un appareil de fixation

Publications (2)

Publication Number Publication Date
US20220404385A1 US20220404385A1 (en) 2022-12-22
US12416647B2 true US12416647B2 (en) 2025-09-16

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US (1) US12416647B2 (fr)
EP (1) EP4031882B1 (fr)
JP (1) JP7438340B2 (fr)
CN (1) CN114424069B (fr)
DE (1) DE102019125405A1 (fr)
WO (1) WO2021052762A1 (fr)

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US11260690B2 (en) 2020-03-31 2022-03-01 Bendix Commercial Vehicle Systems Llc Wheel speed sensor assembly with stepped alignment key
DE102021202438A1 (de) 2021-03-12 2022-09-15 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Klemmhülse zur montage eines drehfühlers sowie drehfühleranordnung und drehfühlersystem mit einer solchen klemmhülse
DE102024104617A1 (de) 2024-02-20 2025-08-21 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Sensor zur Erfassung einer Drehgeschwindigkeit und/oder Drehrichtung eines Rades eines Fahrzeuges, System umfassend einen solchen Sensor und Fahrzeug umfassend ein solches System

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Also Published As

Publication number Publication date
WO2021052762A1 (fr) 2021-03-25
DE102019125405A1 (de) 2021-03-25
JP2022548967A (ja) 2022-11-22
EP4031882A1 (fr) 2022-07-27
US20220404385A1 (en) 2022-12-22
CN114424069B (zh) 2024-04-30
CN114424069A (zh) 2022-04-29
EP4031882B1 (fr) 2023-11-08
JP7438340B2 (ja) 2024-02-26

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